The cover-up: A primer and a full coverage foundation.If you’ve got uneven skin tone or several problem areas, it can be tempting to just go to town with the concealer. Don't do it -- concealer looks unnatural when used all over the face, and it can even trigger breakouts. Instead, start with a primer suited to your skin type – it will give your makeup a smooth base to stick to, and will ultimately let you use less of the stuff. Next, apply a full coverage foundation with a clean makeup brush. Finish up by dotting concealer only where you really need it and setting everything with a dusting of powder.